23-12-2017, 04:11 PM
*Virtual memory is an imaginary memory area supported by some operating systems.
*The process of translating virtual address to physical address is known as - Mapping
Extra Info
Access time
*The time required to reach a particular storage location and obtain its content in a disk is called Access time Seek time
*The average time takes to move read / write head to a particular track on a disk.
Latency Time
*In general, it is the time between initiating a request in the computer and receiving the answer.
BASIC INFO
*1 Nibble - 4 bits
*1 Byte - 8 bits
*1 KB - 1024 Bytes ≈ 1000 bytes
*1 MB - 1024 KB ≈ 1 million bytes
*1 GB - 1024 MB ≈ 1 billion bytes
*1 TB - 1024 GB ≈ 1 Trillion bytes
*All buses consist of two parts. They are - Address bus and data bus.
*Set of wires which is used to transfer the address of specific memory locations
Ans : Address bus
*Set of wires that provides transportation of data
Ans : Data bus
*Data bus transfers actual data.
*Bus that connects CPU to RAM (main memory) on the motherboard is known as
Ans : System bus
*Set of wires used to transmit signals to control the operation of various units of a computer is called
Ans : Control bus
*The component which routes data between the computer buses is known as
Ans : Chipset
Measurement of Memory
*The smallest unit of memory is bit.
*Bit is the short form of binary digit
*The speed of a hard disc is measured in
Ans : Revolutions Per Minute (RPM)
*Memory of a computer is usually measured in
Ans : Bytes
*The storage capacity of a hard disc is measured in Megabytes, Gigabytes & Terabytes.
*1 bit is one or zero (1 or 0)
*Half byte is known as - nibble
